Blade for an earth working tool



FIG. 1 is a front elevational view of a blade for an earth working tool showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a side elevational view thereof with alternate broken line disclosure;

FIG. 7 is a side elevational view thereof with alternate broken line disclosure; and,

FIG. 8 is an enlarged side elevational view thereof.

The broken lines shown in FIGS. 3, 6 and 7 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a blade for an earth working tool, as shown and described. 